skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

ABOUT US
Measured value block 003 > < Measured value block 001

Fabia Mk1

Measured value block 002
   
Measured value block 002
    
 Reading measured value block 2→Readout on display
 50 %7 bar016.0 °C 
     Evaporator vent temperature sender via -G263-1)
    Conditions for regulating the compressor output
t  Meaning see table below
   Coolant pressure via high pressure sender -G65-
t  Specified value: 2...32 bar (0.2...3.2 MPa) 2)
  Compressor output
t  if display 0%, observe compressor output regulating conditions in display field 3
  

1) If a temperature is displayed that greatly deviates from the ambient temperature of the sender, replace the sender.
2) In the event of deviations from the specified value, check the conditions for regulating the compressor output in display field 3.
Analysis: Measured value block 002, display field 3
The compressor is not disconnected by a magnetic clutch but keeps on running. Its output is regulated externally via the regulating valve for compressor, air conditioning system -N280 -.
   
Display -V.A.G 1552-Conditions for regulating the compressor outputRectifying fault 
0
t  none
  
1
t  Coolant pressure above 32 bar (3.2 MPa)
–  Interrogating fault memory → Chapter
3
t  Coolant pressure below 2 bar (0.2 MPa)
–  Interrogating fault memory → Chapter
5
t  low engine speed
–  Read out fault memory of the 4AV control unit → Engine, Fuel Injection; Rep. Gr.01
–  If necessary check engine speed sender -G28-.
6
t  Air conditioning switched off (AC function not activated)
no defect
–  Push AC button on the heating and air conditioning control
7
t  Air conditioning switched off (fresh air blower switch on position “0”)
no defect
–  Switch fresh air blower switch to “1”
8
t  Ambient temperature below -3 °C (± 1 °C)
no defect
–  If necessary check ambient temperature sensor -G17-
10
t  Supply voltage too small or too great
–  Analysing measured value block 001 → Chapter
–  Interrogating fault memory → Chapter
11
t  Coolant temperature above 118 °C
–  Read out fault memory of the 4AV control unit → Engine, Fuel Injection; Rep. Gr.01
12
t  Compressor output limitation of the engine control unit
–  Read out fault memory of the 4AV control unit → Engine, Fuel Injection; Rep. Gr.01
14
t  Evaporator vent temperature below 1 °C
–  Analysing measured value block 002 → Chapter
–  Interrogating fault memory → Chapter
16
t  Evaporator vent temperature sender -G263- defective
t  Coolant fan not operational
–  Performing final control diagnosis (function 03) → Chapter
–  Analysing measured value block 002 → Chapter
–  Interrogating fault memory → Chapter

   

Measured value block 003 > < Measured value block 001